NYSE Euronext is considering several options to win support for its planned merger with Deutsche Boerse AG , including paying its shareholders a special dividend at the closing of the deal, sources familiar with the discussions said on Wednesday.

Other options include NYSE Euronext and Deutsche Boerse paying a dividend or buying back shares after the deal is completed, said one of the sources, who requested anonymity.

The two exchanges have also identified additional cost savings from their planned combination, a third source said.

(Reporting by Paritosh Bansal and Jonathan Spicer)